辽中南城市群热岛效应研究

Analysis on Heat Island Effect of Urban Agglomeration in Central and Southern Liaoning Province

热岛强度的分析结果表明,区域水平上,辽中南城市群的市辖区温度明显高于周边地区,形成明显的亮温区;2000-2019年,城市热岛强度增强,城市群的温度与其他地区的温度差在增加。在城市水平上,以沈阳为例,从市区到郊区温度呈明显递减趋势;受城市扩张等因素影响,2000-2019年,城区与郊区的温度差呈降低趋势,热岛强度反而呈降低趋势。土地利用方式对地表温度的影响非常明显,在同一时段,地表均温由低到高分别为林地、水域、耕地、草地、未利用地和建设用地。

The analysis results of heat island intensity show that the temperature of the mid-southern Liaoningurbanagglomerations is significantly than that of surrounding areas, forming an obvious high temperature zone. From 2000 to 2019, the intensity of urban heat island increases, and the temperature difference between urban agglomeration and other areas increases. The temperature of Shenyang city shows a decreasing trend from the urban area to the suburbs. Influenced by urban expansion, the temperature difference between urban and suburban areas decreased from 2000 to 2019, which means the intensity of heat island decreased. The influence of land use on land surface temperature is very obvious. In the same period, the average surface temperature from low to high was forest land, water area, cultivated land, grassland, bare land and construction land.